683216217 has 12 divisors (see below), whose sum is σ = 996640164. Its totient is φ = 450967200.

The previous prime is 683216197. The next prime is 683216257. The reversal of 683216217 is 712612386.

683216217 is a `hidden beast` number, since 6 + 8 + 3 + 21 + 621 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 302029641 + 381186576 = 17379^2 + 19524^2 .

It is not a de Polignac number, because 683216217 - 2¹⁴ = 683199833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (683216257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 374898 + ... + 376715.

It is an arithmetic number, because the mean of its divisors is an integer number (83053347).

Almost surely, 2^683216217 is an apocalyptic number.

It is an amenable number.

683216217 is a deficient number, since it is larger than the sum of its proper divisors (313423947).

683216217 is a wasteful number, since it uses less digits than its factorization.

683216217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751720 (or 751717 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 683216217 is about 26138.4050201997. The cubic root of 683216217 is about 880.7501424818.

The spelling of 683216217 in words is "six hundred eighty-three million, two hundred sixteen thousand, two hundred seventeen".